Invoice rejection reasons

Hi Team Prem Tracz ,

Wanted to know if below scenario is feasible in DSN -S4HANA integration:

1. Once supplier post invoice --> it comes to S4hana in Parked status--> At this stage we can delete this parked invoice --> supplier network invoice status changes to rejection--> At this stage how can buyer inform the reason of rejection to supplier ?

2.Once supplier post invoice -->it comes to S4hana in Parked status--> Buyer Post invoice document-->Supplier network invoice status changes to approved--> if buyer wants to reverse/cancellation of invoice S4hana pops up with reason code --> supplier network invoice status changes to rejection--> At this stage comments or reason for rejection is not visible in Supplier network.

Could you please guide us how to achieve above requirement .